How do you use your calculator(s)? (or did*)

12172017, 03:19 PM
Post: #1




How do you use your calculator(s)? (or did*)
Alongside the ongoing thread about which calculator you own, it would be interesting also to know how you use them (now or in the past, if you used them at all).
Of course even if you report the usage of one calculator it is enough, you don't have to list them all. I searched with google on hpmuseum.org and I got very little results, although interesting. If you want to try yourself my search string was: site:hpmuseum.org use calculator . Hence I think that a new topic, that hopefully won't be limited in time, may be interesting. pier4r: Real calculators:  ti 34 (1987) to compute some stats on the monthly expenses. At the moment nothing more. Typing long formulas without the ability to see the formula typed is really frustrating.  sharp 506w to refresh some math and help me poke around some formulas to get an idea how they work. Also it is the preferred device for simple computations due to the possibility to review the formulas.  ti nspire handheld: tried to use lua without TI software. It is possible (and it is quite fast) but very clumsy. In storage.  ti 89. used very a little. I will have to check it if I have time.  hp 50g. In the past I used to solve some math problems for the university, to understand them better. Now it is mostly programming as mental exercise and refreshing some math. Furthermore I started, thanks to the 50g storage capabilities and the amazing standard library of RPL commands, to collect data about how I value my actions. This project is a life long project so the 50g will always work unless I get bored.  hp50g no 2. For newRPL, for tasks where userRPL is too slow. Virtual calculators  hp prime (windows, android). Planned to do some intensive simulations (about bitcoin price for example) since it can run easily on different devices, but not yet started. The idea is to have a programmable math environment geared towards math functions with enough memory that can run on different devices. The strong point is that it can run on android devices that are fanless (and mobile, plenty and powerful) without much effort on my side. This instead of finding scientific libraries for this or that programming language that then may not run (or they are unavailable) for the same programming language on another OS. The HPPL is quite appealing since it resembles Pascal.  free42. I check from time to time if it can replace the 506w, but so far aside from simple calculations, the 506w seems more practical (mainly due to the tacticle feeling). Wikis are great, Contribute :) 

12172017, 03:38 PM
(This post was last modified: 12172017 03:38 PM by DA74254.)
Post: #2




RE: How do you use your calculator(s)? (or did*)
There is a thread here. I remember it because it was the very first one I made a post in
"How and why do you use your HP calc?" http://www.hpmuseum.org/forum/thread9070.html Since the only "redefinition" of how and why in my case is due to the aquirement of the SM DM42, I guess the DM wil be used the most for the mentioned fuel calculations along with the free42 app. Mainly the CAS is used with the Prime. The "exact" RPN calculations has been performed with the 50G and I've used the 35S for "easy programming". As of now, I guess the DM42 will be the main workhorse for astronomy, geography and electronics computations with the Prime for CAS and graphs. The 50G (and the 28S) will always be held "in good shape" and used every now and then. I guess my 49G+ will be the newRPL playground. Here's my original post in the other thread: Quote:Actually not my first post here on the forums, but I've absolutely lost and cant recall neither my nick, nor my pwd, so a "new" username.. Esben 28s, 35s, 49G+, 50G, Prime G2 HW D, SwissMicros DM42, WP43 Pilot Elektronika MK52 & MK61 

12172017, 04:31 PM
Post: #3




RE: How do you use your calculator(s)? (or did*)
I use HP 35S quite a lot at university, to quickly check on test/homework score means and SD for students, summing up each individual score on a test, etc. I sometimes use some of the others for this as well (HP 42S, HP 32SII). The HP42S I have mostly used to refresh mathematics with, to play around with some functions that I find interesting (sometimes related to biology). One reason I rarely take it to my work is that I don't want to lose the 42S. HP 32SII and 35S are also handy for quick conversions. More recently I have also used 41CV for all of the above (with programmed conversions).


12172017, 07:57 PM
Post: #4




RE: How do you use your calculator(s)? (or did*)
Completely forgot the other thread (and Google did not help ). Well then since there is a link we can keep one active if there is enough participation.
Wikis are great, Contribute :) 

12172017, 11:47 PM
(This post was last modified: 12192017 02:27 AM by brickviking.)
Post: #5




RE: How did you use your calculator?
I've already approached the "what do I do with my HP calculator..." in the other thread, so I'll approach the "did" portion of this question (and the nonHP calculators), as I've had a HP34C in the past and still have the fx9750G+ and the GII.
In the past, I mainly used calculators in the supermarket to add up totals; here's an extract from a blog article I wrote back in 2008 about the fx9750G+, fx82MS and others: (09152008 10:00 AM)brickviking Wrote:I was using the FX82MS to motor around the supermarket, adding up what we'd bought, in about seven different categories. I came across a nice way of doing this, (with keys in []): The program I generated for the HP34C was previously generated from that sequence of instructions I'd used for the 82MS:
I think I may have made a modification on this that took two vars off the stack, multiplied them together and added them to the running total but I no longer have the 34C, nor the programs I wrote. Because of the programmability of the 9750G+, I was able to seriously expand the "program" I'd used on both the 34C and the 82MS, to the extent where I was able to actually release my program as a fully working program to casiopeia.net. I've since bought a 9750GII with USB connectivity, which allowed me to upgrade the program further and add features far faster than with the original G+. These days, the GII is now my fortnightly grocery "driver" as it's definitely faster at running my "little" program. As I said in the other thread, my HP50G gets used for aircraft stuff, grocery total holding and unit conversions. (Post 146) Regards, BrickViking HP50g Casio fx9750G+ Casio fx9750GII (SH4a) 

12172017, 11:57 PM
Post: #6




RE: How do you use your calculator(s)? (or did*)
(12172017 03:19 PM)pier4r Wrote: Alongside the ongoing thread about which calculator you own, it would be interesting also to know how you use them (now or in the past, if you used them at all). Wow, Great question. HP65  19761978  Used it to learn programming. Math calculations and general stuff since I was an engineering assistant at a civil engineering firm hp67 19781980 same as above. Enjoyed additional memory and more advanced programning HP41c  19801987  data entry simulation, data capture and data analysis for my MS degree (compared Algebraic and RPB entry methods). Also did various statistical and data analysis functions as a research Psychologist at Bell Labs. HP12c,15c  19872000 general use HP42s  20002012 general use 2013  rediscovered HP calcs. Built up collection, rotated thru HP35, HP45, HP65, HP67, HP41*, 11,12,15,16, 42s What a long strange trip it's been. .....Art 

12182017, 12:05 AM
Post: #7




RE: How do you use your calculator(s)? (or did*)
(12172017 11:57 PM)larthurl Wrote: What a long strange trip it's been. Just use WALSTIB. It's shorter, more intriguing and well, more Dead. Bob Prosperi 

12182017, 01:21 AM
(This post was last modified: 12182017 01:22 AM by Dave Frederickson.)
Post: #8




RE: How do you use your calculator(s)? (or did*)
(12182017 12:05 AM)rprosperi Wrote:(12172017 11:57 PM)larthurl Wrote: What a long strange trip it's been. In case you didn't know, Bob's a Grateful Dead fan. https://www.urbandictionary.com/define.php?term=WALSTIB 

12182017, 08:19 AM
Post: #9




RE: How do you use your calculator(s)? (or did*)
Great question! These days I mostly use my Hp Prime for everything at my desk, whether it’s for simple calculations, limited financial calculations, or for specialized equation solving. The best part is the brightly lit display, which for older eyes, really helps!
I tend to carry a smaller machine with me when traveling — maybe a DM15L or my WP34s. Other calculators are dotted around the house for quick access. HP35s behind the living room bar because you never know when you’ll need some of its useful functions. TI36X Pro in the kitchen for quick conversions — metric to Imperial etc. And sometimes I’ll just pull out the 50g because it is second to none in capability and is kind of fun. The TI89 is pretty much an abandoned astronaut — it just takes up space. But my college calculator, a TI58 (sadly not a 58C) completely got me through a B.S. degree with assorted electives in statistics, math, and other stuff in addition to chemistry! It even got me through a Ph.D, so I have fond memories of that one. 

12182017, 08:33 AM
(This post was last modified: 12182017 08:35 AM by pier4r.)
Post: #10




RE: How do you use your calculator(s)? (or did*)
(12182017 08:19 AM)JimP Wrote: HP35s behind the living room bar because you never know when you’ll need some of its useful functions. "This drink is too warm". "I have 1cm^3 ice cubes at 2 C (no freedom units here. SI or the door), how much drink did you get?" "It is likely 150 ml" "Temperature?" "more or less 20C" "Alcohol?" "Likely 20%, I'd like to keep it over 15% though" "So now the problem is to bring the drink to 12C with ice cubes before they dilute enough to lower the alcohol content under 15%. Let me pick my trusty 35s." Serious note: I did not solve the problem, yet. So it is really something for the 35s and it proves that "mundane" bar solutions or cocktails are not mundane at all. Wikis are great, Contribute :) 

12182017, 10:55 AM
Post: #11




RE: How do you use your calculator(s)? (or did*)
I use my hp50g and the 48g emulator to explore the math I encounter in my work and which brings my mind to general problems. I also use it to calculate the correct aspect ratio of movies that I code and to calculate the correct proportions to vary the recipes of cooking :)
Hardware: Hp48S  Hp50g (5x black + 1 blue)  HP39gII  Hp27s  Casio fxCG50 

12182017, 06:32 PM
(This post was last modified: 12182017 06:34 PM by jthole.)
Post: #12




RE: How do you use your calculator(s)? (or did*)
I mainly use my HP 12C for work, and that's mostly for time and money related calculations plus some basic statistics. I have a DM15L which I use for fun. Before I had the physical calculators, I used smartphone apps and a X11 RPN calculator to do simple calculations. And before that I had a Casio programmable which I used for many things (when I was still in a very technical job).


12182017, 06:45 PM
(This post was last modified: 12182017 06:46 PM by Benjer.)
Post: #13




RE: How do you use your calculator(s)? (or did*)
4th grade through 7th grade ('94'97):
TI "Hot Calc" (go ahead and laugh) 8th grade through 10th grade ('98'00): TI 30Xa 11th grade  present ('01present): TI 89 in the class room (I'm currently taking college classes) HP Prime at home (not allowed on exams) TI 68 for basic calculations in the classroom or for homework At work (I'm an estimator) I use a TI5040 for basic calculations at my desk. 

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